Battle for Planet Isotrident is an epic empire-building strategy game inspired by the history of human civilization. The game commences in prehistory and your mission is to lead your tribe from the Stone Age to the Space Age. Isotrident can be played online in your web-browser for free.

Join Freeciv-web: One Turn per Day game IX

Game IX has started and you can join it now! Each player will play one turn every day.

This will be one of the greatest ever multiplayer game of Freeciv with 150 players on 30000 map tiles!

Join the LongTurn Web IX here!

Play against the Isotrident AI with 2D HTML5 graphics
Play against the Isotrident AI with 3D WebGL
graphics using the Three.js 3D engine
3D WebGL
Start on a scenario map, such as
World map, America, Italy or Japan.
Choose your map from a real earth map.
Real-Earth Map
Start or join a game with multiple human or AI players.
Start a play-by-email game where you get an e-mail
when it is your turn to play.
Play by Email
Play multiple human players
on the same computer

0 singleplayer games and 0 multiplayer games.
Total number of singleplayer and multiplayer games played for all players globally since 20th February 2016

Multiplayer games:

Game name State Turn Players Actions
Longturn Game IX | 1 turn per day | 150 players | 30000 tiles | Join now! Running 34 150 players Play Info
New Isotrident Multiplayer Game Pregame 0 None Play Info
New Isotrident Multiplayer Game Pregame 0 None Play Info

Hall Of Fame

See the Hall Of Fame, where the best scores of single-player games are listed!

Best of Play by Email

Rank Player Wins

Play Isotrident in Chinese at


Isotrident is open source software released. You can contribute to the project on GitHub.


Tomcat Python
Three.js Blender